CASA 1.0

Learn more about the first Team CASA project CASA 1.0.
Read more about below:

Ventilation

Construction

Energy

Ventilation

The house makes use of an advanced active ventilation system, which is designed by the company Duco.

Fresh Air

Casa 1.0 is insulated very well, hence the heat and air contained within the house are not easily exchanged to the outside environment.
A controlled ventilation system by Duco is installed to create a comfortable environment for the residents. Based on measurements of CO2 and humidity levels in the house, the ventilation system decides where and how much to ventilate. This system ensures that the residents of the house will have fresh air at all times, creating a comfortable environment.

Hot Water

Since the ventilated air still contains thermal energy, this energy can be ’won back’ by the heat pump. The energy is used to heat up a tap water boiler, providing the residents with hot water for showering an cooking. This whole process ensures that the energy required to heat the house is not lost to ventilation.

Cooling

Cooling by ventilation system is a second cooling system used in the house. The idea is to redirect the output air of the heat pump, from which the energy has been extracted. If this colder air is sent into the residential area, the room will cool down. What needs to be considered is that this cold air also needs be fresh in order for the room to stay comfortable. Therefore, the input air in the heat pump needs to come from outside. This way, the house can receive a continuous stream of cooled fresh air.

Construction

The prefabricated building CASA 1.0 is planned to be assembled within 2 weeks.

STES

STES stands for Seasonal Thermal Energy Storage. It is a big tank (104 cubic meters) with water. This water will be heated up to 80 degrees Celsius during the summer. This heat can be used again when it is winter. The STES will be placed in the ground long before the actual assembling of the house to give it time to settle. The STES has a double function as the foundation of the house. The foundation will be constructed without the use of concrete.

Service Core

The construction of an internal service core is in itself not uncommon, but having them in individual dwellings makes this a unique case. Team CASA has created one of very few, if not the first, fully flexible facades for individual dwellings. This means that the facade elements can be replaced without interfering with the construction itself, which makes remodeling simpler. In addition, our wall units are demountable and modular: demolition costs become residual value and all materials can be separated and recycled. As the construction does not need to be changed, the house can be adjusted almost indefinitely, so that the costs and total material requirements are minimized.

Prefabrication

CASA 1.0 will be almost entirely prefabricated. This is done for several reasons. First of all, with prefabrication, qualitatively better results can be obtained, compared to building on site, because of the controlled conditions that can be maintained in the factory. The process of constructing the different elements of the building is not dependent on weather conditions, which saves time and costs. Moreover, prefabrication is considered more sustainable. Materials can be used in a more efficient way, since less materials are lost due to errors on site. The prefabricated building is planned to be assembled within 2 weeks.

Building Sequence

Once the STES is placed, the prefabricated building is planned to be assembled within 2 weeks. On top of the STES, the framework for the service core will be placed: this is the connection between the foundation (the STES) and the house. On this framework, the floors are placed as prefabricated elements. In a floor element, the steel floor beams that bear the load of the floor and facades are already integrated. Furthermore, it contains the insulation, a layer of wooden beams, and on top of this layer, the floor finishing with floor heating. On top of the ground floor layer, the service core is placed. This service core element has all necessary installations already integrated in it. Structurally, it consists of four columns with diagonal bracing on three sides. On top of the service core, the floor elements of the first floor are placed, including the structural steel beams, floor heating, the floor finishing and the ceiling for the ground floor. On top of this floor, a new service core element is placed, that is used to support the roof. After the roof is placed, the energy roof with solar panels is installed. Finally, the main structure of the house is finished. The next step is to assemble the inner walls, complete with electrical connections. After this is done, the facade elements are connected to the structure, and CASA 1.0 is built.

Energy

CASA 1.0 concept is almost fully energy independent which means that global developments will have almost no effect on the energy availability to the users. Moreover, the energy is generated in a sustainable way.

Energy Concept

The goal related to the energy production is that the users of CASA 1.0 use an equal amount of energy to the amount that is produced. This may sound like a NZEB (Net Zero Energy Building, Dutch: Nul-Op-de-Meter, NOM) but there is a key distinction. For CASA 1.0, we want to limit the peaks of energy, both in delivering to the grid and extracting from the net. For a NZEB, this is not necessarily the case. Most of those houses will produce way too much energy in the summer, and they will sell this excess energy back to the grid. Then, in the winter, the houses has nearly zero production of energy and needs a lot of energy from the grid. The problem with this method is that it cannot be realized on a large scale. If the whole country shifts to that concept, there will be a lot of power peaks on the grid which would require more gas-powered plants. The way CASA 1.0 will tackle this problem, is by storing the excess energy in the summer within the house in our STES, so that it can be used during the winter months.

Energy Source

CASA 1.0 has one single energy source, which is the EnergieDak. EnergieDak is a product from our partner SolarTech and it is a so called PV-T roof. This means that it will produce both electrical energy (PV), like an ordinary solar panel, but it will also produce thermal energy (T). The EnergieDak consists of a flexible photo-voltaic layer on top of a grid of tubes where a water and glycol mixture is running through. The glycol is to prevent water transforming into ice during the winter.
The flexible photo-voltaic layer is just like a regular solar panel capable of producing electricity. However, not only electricity is generated. Because of the radiation of the sun the solar panel will also heat up. This heat will be extracted by the water that is running trough the pipes underneath the solar panels. This has also a beneficial effect on the efficiency of the solar panels because these will be kept cool.

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Location
Groene loper 10,
Matrix building (room 1.239)
Eindhoven,  the Netherlands
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